that will take you right to a page for ronald reagan vs. jimmy carter. the commercials are 30 seconds or a minute that they summarize what was going on in the campaign to tell us what the main issues are. they were not intended to last as a historical record or if you look at years and years later. these are really important historical archives. >> these were made for the obama campaign. >> a democratic cookie cutter. >> what you see behind us is just a sampling of some of the material that we collected from the last two conventions. >> it is on a table in a room that is our reference collection. full complete collection of the record for american politics and it goes back to george washington. >> this whole row of materials is made up of campaign buttons. this is from the mckinley campaign from 1896 until 1900. >> every four years ago out on the campaign trail and rebuild it out with contemporary material. >> some of these were passed by a local delegation. you go to the local primaries and we go to the national convention. it is the buttons, the poster